:root {
  color-scheme: light;
  --paper: #f3f4ed;
  --ink: #171b26;
  --muted: #5c6473;
  --line: #c9ced5;
  --blue: #1938d3;
  --lime: #d8f35e;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--paper); }
a { color: inherit; }
.masthead, main, footer { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.masthead { display: flex; justify-content: space-between; align-items: center; gap: 32px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: .86rem; font-weight: 800; letter-spacing: .06em; }
.brand img { display: block; }
.brand b { color: var(--blue); }
.brand small { display: block; margin-top: 4px; color: var(--muted); font-size: .61rem; font-weight: 650; letter-spacing: .16em; }
nav { display: flex; flex-wrap: wrap; gap: 24px; }
nav a, .text-link { font-size: .84rem; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 4px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, .text-link:hover { color: var(--blue); }
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: clamp(32px, 7vw, 88px); align-items: center; padding: clamp(56px, 10vw, 118px) 0 92px; }
.eyebrow { margin: 0 0 16px; color: var(--blue); font-size: .7rem; font-weight: 800; letter-spacing: .18em; }
h1 { max-width: 720px; margin: 0; font-size: clamp(3rem, 8vw, 6.8rem); line-height: .9; letter-spacing: -.075em; }
.intro { max-width: 640px; color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.download { display: grid; grid-template-columns: 1fr auto; gap: 2px 18px; align-items: center; width: min(100%, 360px); margin-top: 30px; padding: 17px 20px; background: var(--blue); color: white; text-decoration: none; }
.download span { font-weight: 750; }
.download small { color: #dbe3ff; font-size: .74rem; }
.download b { grid-column: 2; grid-row: 1 / span 2; color: var(--lime); font-size: 1.5rem; }
.equation { padding: 30px; border-top: 4px solid var(--ink); border-bottom: 1px solid var(--line); background: #e7eadf; }
.equation-label { margin: 0 0 24px; color: var(--muted); font-size: .68rem; font-weight: 800; letter-spacing: .16em; }
.equation-row { display: grid; grid-template-columns: 1fr 28px 1fr; gap: 10px; align-items: baseline; margin: 14px 0; font-size: clamp(1rem, 2vw, 1.25rem); }
.equation-row b { color: var(--blue); }
.equation-row strong { text-align: right; }
.rule { height: 1px; margin: 25px 0 18px; background: var(--line); }
.note { margin: 0; color: var(--muted); font-size: .84rem; line-height: 1.6; }
.overview { padding: 42px 0 78px; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
h2 { margin: 0; font-size: clamp(1.7rem, 4vw, 3rem); letter-spacing: -.05em; }
.columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.columns article { min-height: 190px; padding: 22px; background: var(--paper); }
.index { color: var(--blue); font-size: .72rem; font-weight: 850; letter-spacing: .12em; }
h3 { margin: 34px 0 8px; font-size: 1.1rem; }
.columns p, .catalog-link p { max-width: 330px; margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.6; }
.catalog-link { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding: 30px 0 56px; border-top: 1px solid var(--line); }
.catalog-link h2 { margin-bottom: 12px; }
.catalog-link > a { flex: 0 0 auto; padding: 13px 16px; background: var(--lime); font-size: .86rem; font-weight: 800; text-decoration: none; }
.document { min-height: 72vh; padding: 84px 0 100px; }
.document h1 { max-width: 900px; font-size: clamp(2.8rem, 7vw, 5.5rem); }
.table-wrap { overflow-x: auto; margin: 36px 0 22px; border-top: 3px solid var(--ink); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { padding: 14px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
td:nth-child(2), td:nth-child(3) { color: var(--blue); font-weight: 800; }
.distinction { max-width: 760px; margin: 24px 0 30px; padding: 16px 18px; border-left: 4px solid var(--blue); background: #e7eadf; color: var(--muted); line-height: 1.55; }
.distinction b { color: var(--ink); }
.release-list { max-width: 780px; margin: 38px 0; border-top: 2px solid var(--ink); }
.release-list div { display: grid; grid-template-columns: minmax(140px, .4fr) 1fr; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.release-list dt { color: var(--muted); font-size: .82rem; font-weight: 700; }
.release-list dd { margin: 0; font-size: .9rem; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 19px 0 30px; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; letter-spacing: .04em; }
footer a { text-decoration-thickness: 1px; text-underline-offset: 3px; }
@media (max-width: 720px) {
  .masthead, .catalog-link { align-items: flex-start; flex-direction: column; }
  .hero { grid-template-columns: 1fr; padding-top: 66px; }
  .columns { grid-template-columns: 1fr; }
  .columns article { min-height: 0; }
  h3 { margin-top: 18px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
}